Hi Renato, I tried importing the solid as IGES, STEP and PARASOLID files. Still I get the same message that the subtraction operation cannot work on non- real geometry. Is there any way to tackle this problem. I imported the solid as a whole.

Thanks, Vidya

I've forgot to mention in the last message but can you get some kind of report about your model after importing it? Most of the preprocessor softwares have reports to show you how many volumes, areas, lines, etc... were successfully imported or if your imported model has any kind of degeneracy.

Renato.